Sash-lock.



No. 873,180. 7 PATBNTED DEC. 10, 1907.

- 0. SMITH.

SASH LOCK.

APPLICATION rmm MAR. 28. 1907.

2 SHEETS-SHEET 1'.

I I :12 I QMQW CHARLES SMITH, OF CLEVELAND, OHIO.

SASI-LLOGK.

Application filed March 28.1907. Serial No. 365.180.

Specification of Letters Patent.

Patented. Dec. 10,1907.

To all whom it may concern:

Be it known that I, OHARLEs SMITH, a citizen of the United States, residing at Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Sash-Locks, of which the following is a specification.

This invention is a sash lock or fastener, having for its object to provide an improved device which will allow the sash to be locked when closed or when partly opened, at any point desired, and which is so constructed that an intruder cannot unlock the same even though it may be within his reach from the outside of the window. v

A further feature is that when the sashes are opened they may both be raised or low ered at the same time.

In the accompanying drawings, Figure 1 is a front elevation, partly in section, illustrat- 1 ing the invention. Fig. 2 is a section on the line 22 of Fig. 1. Fig. 3is a section on the line 3-3 of Fig. 1.

Referring specifically to the drawings, 6 indicates the lower sash and 7 the upper sash.

8 is a rack bar which is slidable up and down along the edge of the parting strip 9, to which it is secured by means of screws 10 the heads of which engage in a dove-tailed groove 11 on the back of the rack. At the bottom the parting strip is provided with a stop 12 for the lower end of the rack, and at the top the upper sash 7 is provided with a stop 13 for the upper end of the rack. The length of the rack is substantially equal to the height of a sash. v

The lower sash is provided on the upper side of the top rail thereof with a sliding pin 14 held by a casing 15 secured to the sash rail. At the inner end the pin has an off-set head 16 which is beveled as at 17 to enter easily between the teeth of the rack. Behind or in line with the head is a recess 18, cut in the stile of the upper sash, of sufficient depth to allow the head to retreat thereinto and to be disengaged from the rack. A spring 19, coiled around the pin between its finger piece 20 and the casing 15, serves to normally push the rod out to engage the head 16 in one of the notches of the rack.

The sashes are normally-locked together by means of the pin engaging in the rack, with the stop 13 against the upper end of the rack. This prevents movement of the sashes with respect to each other, although, if one of them is partly open, they can both move together. T 0 open one of the sashes or set one of them partly open, the pin is pressed in until its head is disengaged from the rack. Then the rack can be lowered to the desired extent. Then the pin is al lowed to reengage the rack, and the sashes can then be moved with respect to each other until the upper end of the rack strikes the stop 13, Thus, when the lower sash is closed, the upper sash can be lowered until the stop strikes the end of the rack bar. Or, if the upper sash is closed, the lower sash can be ralsed until the rack bar strikes the stop, and the extent of this movement can be varied according to the distance the rack bar is let down. The pin cannot be released from the rack bar unless the pin is brought opposite the recess 18, and this cannot be done until both sashes are closed. Consequently it cannot be operated from the outside, and the sashes can safely be left partly open either at the top or bottom, without danger of an intruder being able to increase the opening. The screws 10 are caused to bind the rack bar with enough friction to prevent the same from falling or sliding down, nevertheless permitting the same to be moved up or down by hand.

I claim:

1.. A sash lock comprising a rack bar slidable between the sashes, a stop on one sash engaged by the end of the bar to limit its movement, and a pin carried by the other sash and engageable with the rack at various points.

2. A sash lock comprising a rack bar slidable along the parting strip between the sashes, a stop on one sash adapted to strike the end of the bar, said sash having a recess in its frame, beside the rack, anda sliding pin carried by the other sash and normally engaging the rack and movable into the recess to disengage the same. a i 3. Asashlock com rising arackbar ofsubstantially the same ength as the'pheight of one sash, said barbeing slirleble between the then movable into the reeess to disengage sashes, a stop on the upper sash, adaptedv to the rack. le strike the upper end of the bar, and 21V spring In testimony whereof I do :LillX my signepin carried by the lower sash and having 1:. nature, in presenee of two witnesses.

lateral projection on. its inner end normally CHARLES SM IIH. engaging" the rack, the upper sash having a recess beside the rack and opposite to the pin when the sashes are closed, the pin being \"Yitnesses:

JOHN A. BoMMnAun'r, SHIRLEY J. BOIHMIIA'RIYI. 

